IEC 62077-2015 pdf Fibre optic interconnecting devices and passive components – Fibre optic circulators – Generic specification

4.2.2.2 Blank detail specifications The blank detail specification lists all of the parameters and features applicable to a fibre optic circulator, including the type, operating characteristics, housing configurations, test methods, and performance requirements. The blank detail specification is applicable to any fibre optic circulator design and quality assessment requirement. The blank detail specification contains the preferred format for stating the required information in the detail specification. Blank detail specifications are not, by themselves, a specification level. They are associated with the generic specification. Each blank detail specification shall be limited to one environmental category. Each blank detail specification shall contain: – the minimum mandatory test schedules and performance requirements, – the preferred format for stating the required information in the detail specification, – in case of hybrid components, including connectors, addition of appropriate entry fields to show the reference normative document, document title and issue date.
Interface standards provide both manufacturer and user with all the information required to make or use the product in conformity with the physical features of that standard interface. Interface standards fully define the features essential for the mating and unmating of optical fibre connectors and other components. They also serve to position the optical datum target, where defined, relative to other reference datum. Interface standards ensure that connectors and adapters that comply with the standard will fit together. The standards may also contain tolerance grades for ferrules and alignment devices. Tolerance grades are used to provide different levels of alignment precision. The interface dimensions may also be used to design other components that will mate with the connectors. For example, an active device mount can be designed using the adapter interface dimensions. The use of these dimensions combined with those of a standard plug provides the designer with assurance that the standard plugs will fit into the optical device mount. They also provide the location of the plug’s optical datum target.